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Table 1 Demographic characteristics of the patients who completed the study

From: Reduction of extrinsic tooth stain by a toothpaste containing 10% high cleaning silica, 0.5% sodium phytate and 0.5% sodium pyrophosphate: an 8-week randomised clinical trial

Groups

Gender

P*

Age (years)

P*

Male

Female

Mean ± SD

Test (n = 40)

23

17

0.32

42.50 ± 9.22

0.84

Control (n = 41)

19

22

 

42.05 ± 10.19

 
  1. *t test for comparing age between groups and Chi-square test for comparing gender between groups
  2. SD standard deviation
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BMC Oral Health

ISSN: 1472-6831

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